Electrical energy
used efficiently
Intelligent products and systems for
industrial applications, infrastructure and buildings
Answers for infrastructure.
Intelligent technologies
for a sustainable world
The industrial nations are facing a considerable challenge today:
How can they protect the environment and reduce CO2 emissions
while at the same time preserving productivity and quality of life?
The answer to these questions is the responsible use of resources
and switching to renewable energies.
Only the efficient use of energy can slow down climate change and
preserve the planet for future generations. Siemens views this as
its specific responsibility: Intelligent products and systems provide
an essential contribution to saving energy world-wide and to using
existing raw materials as efficiently as possible.
2
Achieving economic
and ecological goals
■■ Profiting from
competitive advantages
With the development of innovative
technologies - such as systems for
intelligent power networks, known as
smart grids, or energy management Siemens is meeting its responsibility
to the world of tomorrow. They help
companies to use energy efficiently,
operate in a sustainable way and to gain
important competitive advantages.
■■ Managing energies intelligently
Energy management systems contribute
considerably to the success of a company
today. This is because energy management means: always knowing where how
much power is being consumed. By measuring, evaluating and analyzing power
flows, energy efficiency can be increased,
costs reduced and an important contribution made to environmental protection.
Energy management at Siemens means:
meeting the future's challenges today.
■■ Low-voltage power distribution
The basis of a energy management
system is low-voltage power distribution.
The consistent concept of communication-capable products from Siemens, an
important part of the Totally Integrated
PowerTM (TIP) technological platform,
permits the electrical power flow to be
detected, evaluated and optimized.
■■ Building management systems
A significant contribution to energy management in buildings is made by GAMMA
building management systems. Energy
costs can be reduced sustainably due to
the automatic control of lighting, sun
protection and room climate.
■■ Excellent support
As a competent and reliable partner we
offer you comprehensive support – from
initial information, planning, configuration and ordering through to commissioning, operation and technical support.
On this basis we provide you with the
type of flexible and efficient help that
allows you to concentrate fully on your
customers and their needs.
Highlights
■■ Competitive advantages are gained
thanks to intelligent energy management
■■ Energy costs are reduced through
measurement, evaluation and analysis of the power flows
■■ Energy consumption is decreased
using intelligent building management systems
Contents
Successfully mastering new challenges
Paving the way for energy efficiency
Comprehensive energy management on all levels
Low-voltage power distribution
Building management systems
Example applications
Comprehensive support from A to Z
4
6
8
10
16
22
23
3
The liberalized power market offers companies new opportunities
for buying energy and generating power inhouse.
Successfully mastering
new challenges
Regulations and standards for more energy efficiency in Europe.
■■ Buying electricity needs the right
planning
The liberalization of the power market
presents new challenges to large-scale
customers with an average input power
of over 30 kW per ¼ hour and an annual
consumption of over 30,000 kWh.
The electricity bill now consists of three
parts: In addition to levies and taxes,
companies pay energy suppliers the
kilowatt hour rate for the actual power
consumed in kWh. In addition, there are
costs for the provision of the power grid
by the power distribution operator. The
company agrees a maximum monthly or
annual connected load with the operator
which is paid through the performance
price and which must not be exceeded. If
this limit is not observed, additional payments become due.
■■ Generating power inhouse
The liberalized power market provides
a further option today: Companies can
generate power inhouse, for example via
cogeneration, photovoltaic systems or
wind turbines. The power generated can
be consumed inhouse or sold.
■■ The general conditions
The world of politics has recognized
the urgent situation and is setting new
general conditions for increased energy
efficiency. For example, the European
Union in its Directive 2002/91/EC "Energy Performance of Buildings Directive"
(EPBD) defines minimum requirements
for energy efficiency in new buildings
and existing buildings undergoing major
renovation work. In addition, the Directive regulates the requirement for energy
certificates when building, selling or renting buildings.
Parts of the electricity bill
average input power greater than 30 kW within 1/4 hour
and annual consumption over 30,000 kWh
Price component
Demand rate (EUR/kW)
electrical connected load
made available
Recipient
Power distribution operator
The electricity bill consists of three
parts. This permits a number of approaches to reduce costs.
4
Kilowatt hour rate
Levies & taxes
(Cent/kWh)
municipal fees, cogeneraelectrical power obtained tion, renewable energies,
green tax, value-added
tax
Electricity supplier
State
Numerous standards point the way to more energyefficient buildings and production processes.
■■ Standards require more efficiency
The EU Directive is implemented in the
standard EN 15232 "Energy Efficiency
of Buildings – Influence of Building
Automation and Building Management".
It emphasizes the correlation between
building automation and energy efficiency and categorizes building automation systems into four energy efficiency
classes from A to D. With efficiency class
A, considerable energy savings are possible in comparison to class C in accordance with the standard.
Intelligent planning creates energy-efficient
infrastructures.
■■ Standards for energy management
Since August 2009, the standard EN
16001 "Power Management Systems –
Requirements with Guidelines for Application" has also been in force in Europe.
It is based largely on the standard EN ISO
14001 and defines the requirements for
the development of efficient energy management systems. The general objective
of the standard is to support companies
and organizations in developing systems
and processes to improve their energy
efficiency in order to reduce costs and
greenhouse gas emissions.
Highlights
■■ The liberalized power market offers
numerous opportunities for energy
cost optimization
■■ Standards define requirements
for efficient energy management
systems
■■ Transparency of power consumption
is the key to optimized energy usage
5
The transparency of power flows permits
targeted energy management.
Paving the way for
energy efficiency
Energy management and energy efficiency – more than just catch phrases.
■■ New challenges
Whether for industrial applications, infrastructure or buildings, energy efficiency
can only be achieved through energy
management. Energy management
means identifying systems and energy
flows precisely and optimizing them appropriately. The results are processes and
workflows with greater energy efficiency.
Companies are therefore faced with an
important task these days: They need
to re-think and pave the way towards
energy management.
6
■■ Energy management
Following the definition of the Association of German Engineers (VDI) energy
management is "the forward-looking, organizational and systemized coordination
of purchasing, conversion, distribution
and use of energy to cover the requirements while taking account of ecological
and economical objectives".
Energy management is specified as an
objective in the standard EN 16001. For
companies it is the basis for the systematic and continuous optimization and
reduction of energy consumption. As part
of this process, financial, technical and legal aspects have to be taken into account.
Energy management systems, explains
the VDI further, "cover the organizational
and information structures required to
realize the energy management, including the necessary technical equipment
(e.g. software and hardware)".
■■ Energy efficiency
Energy efficiency is in place when with the
same properties of use, a higher degree
of efficiency is achieved and lower energy
costs are incurred.
The use of intelligent building automation
systems saves energy.
■■ Saving energy and profiting
For industrial applications, infrastructure
and buildings, the efficient use of energy
is an important competitive advantage
because it permits savings without
impairing workflows, comfort or safety.
A modern energy management system
therefore combines multiple objectives:
producing efficiently and saving energy
at the same time, using comfortable
building management systems and
reducing costs. The basic requirement
for success is a wide-ranging approach
and thus comprehensive energy management: Companies combining expertise on
the application, power distribution and
automation level will achieve optimum
results.
For industry, energy-efficient production is an important
competitive advantage.
■■ Knowledge of power flows
In production, precise knowledge of production processes, automation functionalities and power flows helps to optimize
workflows in terms of power. For example, power consumption is distributed
more evenly and peak loads are absorbed
without affecting the quantity and quality of the goods manufactured.
Similarly, comfort and safety for the user
are not impaired in infrastructure and
buildings. Modern building management
systems and the transparency of the
energy flows ensure that lighting, sun
protection and room climate are optimally coordinated. At the same time, a
precise control adjusts the consumption
to the actual requirements and thus saves
costs and power.
Highlights
■■ Improvement of the energy balance
thanks to the precise knowledge of
processes and workflows across all
technical areas
■■ Saving energy in industry thanks to
more energy-efficient production
and process workflows
■■ Optimal energy usage in buildings
with enhanced comfort
7
Comprehensive energy management on the application, power distribution and
automation level reduces energy consumption.
Comprehensive energy management
on all levels
Sustainable solutions for industrial applications, infrastructure and buildings.
■■ Successful measures
Every kWh of power not generated or
consumed lowers energy costs and spares
the environment 530g1) CO2 . The graphic
on page 9 provides an overview of the
various measures that help a company to
optimize and/or reduce consumption. One
is intended to lower the kilowatt hour rate
paid to the energy supplier, others reduce
the connected load and thus the price paid
to the power distribution operator.
Highlights
■■ Reducing energy costs and protecting the environment using intelligently combined measures
■■ Effective reduction of the electrical
power obtained (kilowatt hour rate)
■■ Cost reduction due to a lower electrical connected load (demand rate)
1)
Average for Germany in 2006
Power distribution and building
management systems: Products
and systems from Siemens form the
basis for successful energy management.
8
Building
management
systems
Low-voltage
power distribution
Energy management for more energy
efficiency of buildings and processes
Form of organization
Development of a strategic and operational structure to guarantee sustainable energy management
Consume only the energy quantity required:
reduction of kWh consumption
(better kilowatt hour rate)
Use the connected load more efficiently:
reduction of the cost per kWh
(better demand rate)
Promoting energy awareness
More energy-efficient processes
Uncovering potential:
– Visualizing the amount of electrical energy
used (load curves, cost center allocation)
– Savings potential thanks to transparent power flows
Avoiding electricity peaks:
– Reduction of load peaks through coordinated
operation of loads
Using energy-efficient products
Setting up a load shedding and energy
management system
Improving the degree of efficiency:
– Saving energy costs by means of energy-efficient
automation and drive technology
Providing infrastructure with more energy efficiency
Environment-friendlier building shells:
– Creating environment-friendly buildings by
using appropriate materials
Consuming energy in a cost-conscious way:
– Reducing load peaks through the targeted shutdown of individual loads
– Load shedding by threshold value monitoring
– Interoperational cost management
Reactive power compensation
Improving the power factor cos φ:
– Reactive power compensation for cutting the current
load in networks and distribution boards in order to use
electrical energy more efficiently
– Reduction in transfer losses via reactive power
compensation field in switchboards
Switching on demand through automation
Demand-oriented energy consumption:
– Optimizing energy use through industrial, building and room automation (e.g. avoidance of no-load operation)
– Energy and cost savings through energy-efficient
controls for lighting, sun protection and room climate
Making selective use of the deregulation of the energy market
The decision on how much power is purchased and how much is generated in-house is based on the transparency of power flows.
9
Low-voltage power distribution as an important
part of an energy management system.
Successful dimensioning and planning of
the low-voltage power distribution
Energy management begins with safe and efficient distribution.
■■ The requirements
An energy management system determines and documents the potential for
improving energy efficiency and makes a
decisive contribution to reducing costs. It
is used to evaluate the energy consumption in the company and thus forms the
basis for the continuous improvement
of its energy efficiency in harmony with
legal framework conditions, such as the
standard EN 16001. The transparency
of power flows and the detailed record-
ing of consumption are therefore central
aspects. Potential savings are determined
and evaluated on the basis of these
values. Successful energy management
indicates the measures which a company
can use to sustainably improve its energy
balance.
Low-voltage power distribution
is an important part of an energy
management architecture.
Low-voltage
power distribution
10
■■ Dimensioning the power distribution
Every company must find the correct
balance between investment costs and
the optimization of its operating costs.
The software SIMARIS design simplifies
this task. A series of intelligent functions facilitates the safe and economical
dimensioning of electrical networks. Up
to 10 percent of energy can be saved as a
result, for example through the reduction
of heat losses or voltage drops or through
the selection of suitable transformers.
The efficient dimensioning of electrical networks with the software
SIMARIS design helps to save costs.
In addition, the optimal configuration of
the switchgear results in cost savings,
selective grading and thus a high level of
availability.
for system and user. Their combination
with suitable measuring technology and
switching state transmission permits efficient energy management.
Highlights
■■ Successful energy management
through monitoring and measuring
of the power flows
■■ Planning the functionalities
Intelligent planning of the power distribution means drawing benefit from
numerous advantages. Well thought-out
planning covers two aspects: Switching
and protection devices primarily take into
account the maximum level of safety
■■ Energy savings of up to 10 percent
through the optimal dimensioning
of electrical networks
■■ Well thought-out planning permits
maximum safety and energy efficiency at the same time
Energy policy
Management review
Planning
Introduction and operation
Internal audit
Energy management
acc. to EN 16001
Control and correction
measures
Monitoring and measuring
Monitoring and measuring of power flows
is at the center of a successful energy
management system.
Corrective and preventative measures
11
Precise measured values and their visualization
form the basis for savings.
Keeping the energy consumption
safely in your sights
Precise knowledge of energy flows using intelligent technology.
■■ The operating phase: knowledge of
electric energy flows
Whether in industrial applications,
infrastructure or buildings, with a well
thought-out energy management system,
companies always have their power distribution under control and reduce costs
by up to 20 percent. For this purpose,
Siemens offers a range of perfectly coordinated components as the ideal basis
for mastering complex requirements
throughout the operating phase.
12
■■ Precise measurement and
visualization
Precise measurement data and the
processing of that data permit accurate allocations and consistent savings:
Depending on the required functionality, switching, protecting and measuring
devices make their measurement data
and switching states available to the
higher-level automation and management systems. The software SENTRON
powermanager offers numerous intelligent functions such as the visualization
of power flows in the form of load curves,
the creation of clearly arranged reports
for the precise allocation of consumption,
the monitoring of status and limits, and
the generation of messages for preventative maintenance measures and for
increasing the system's availability.
■■ Acting promptly
In buildings, GAMMA building manage­
ment systems combined with the
GAMMA peak load limiters permit costeffective and high-performance load
management. In addition, threshold
values can be set in the circuit breakers
SENTRON 3WL and power monitoring
devices SENTRON PAC for load shedding.
Actuators Loads
P
[kW]
cosφ
M
P
P
A
400
Anlagenschutz
I = 380 A
350
Verbraucherschutz I
300
= 301 A
250
200
150
100
50
0
Montag12.12.06
Dienstag13.12.06
Mittwoch
Donnerstag
Sonntag
11.12.06
14.12.06
15.12.06 Freitag
16.12.06Samstag
17.12.06
18.12.06
P
W
[kWh]
P
Rental
kWh
700
600
500
400
300
200
100
0
-20 -19
1
6
-18 -17 -16 -15 -14 -13 -12
-11 -10
-9
-8 -7
-6 -5
-4
-3
-2
-1
0
11 16 21 26 31 36 41 46 51 56 61 66 71 76 81 86 91 96 101 106 111 116 121
Minuten
kW
150
maximale Leistung
gemäß Auslegung
I
[A]
100
Distribution
50
angeschlossene
Last
0
11.12.06 Montag
12.12.06 Dienstag
13.12.06
Mittwoch
14.12.06 Donnerstag
15.12.06
Freitag
16.12.06
Samstag
17.12.06
Sonntag
18.12.06
kVA
9.000
S
[kVA]
8.000
7.000
6.000
Infeed
Transformer
5.000
4.000
3.000
G Generator
2.000
1.000
0
Communication-capable circuit breakers, power monitoring devices
and E-counters form the basis for energy management.
■■ Infeed
At the infeed, i.e. the transfer point from
the power distribution operator to the
customer's system, the apparent power
S [kVA] is measured and therefore the
transformer load monitored. In addition,
the recording of the THD (Total Harmonic
Distortion) and power factor cos φ
permits the level of utilization of the
network quality to be assessed.
■■ Storey distribution system
The loading of each individual outgoing
feeder is documented in the storey
distribution system. This entails
determining the current I [A] and the
corresponding power factor cos φ are
determined and displayed in the form of
load curves.
■■ Rental
Anyone renting rooms or buildings needs
to know how much energy W [kWh] the
renters are consuming. This information is provided by an electrical energy
counter. If this energy is to be billed,
the use of a calibrated, certified energy
counter is required. The energy quantity
is determined on a monthly or annual basis. To offer users an additional incentive
to save energy, the consumption can be
measured in an hourly or quarter hourly
cycle and documented in the form of load
curves.
■■ Large-scale consumers
Large-scale consumers include units
such as compressors or cooling units.
Their relatively high energy consumption
should be measured and documented
separately. Displayed measured values
are the current flow I [A], the power factor cos φ and the active power P [kW].
The active power value provides information on the unit's capacity utilization. The
power factor is used to determine the
reactive power that the unit feeds back
into the distribution network. The current
flow shows the capacity utilization of the
distribution network. It makes sense to
show the current flow and the power factor in the form of load curves.
Highlights
■■ Reduction of costs by up to 20
percent by means of well thoughtout energy management
■■ Clearly arranged visualization of
the power flows with the software
SENTRON powermanager
■■ Targeted shut-down of consumers
using a priority list or set threshold values
13
Components of
low-voltage power distribution
Efficient measurement, switching, visualization and actuation.
Measuring
14
Product
Description
E-counters
SENTRON PAC1500
––Measurement of supplied or imported work W, active power P, reactive power Q
––Forwarding of data via communication module RS485 (Modbus RTU), KNX, M-Bus
––Pulse output (S0), designed for 2 tariff measurements
––Calibrated versions in accordance with the Measuring Instruments Directive
2004/22/EC (MID)
––LCD display
––Modular device for alternating current
––Direct connection up to 80 A and for current transformers x/ 5 A to 10,000/5 A
––Standard rail mounting
––Compliant with Meter Standard EN 50470 (Parts 1 and 3)
Power monitoring device
SENTRON PAC3000
––Detection of up to 30 measured values
(energy consumption, base electrical quantities)
––Forwarding of data via RS485 (Modbus RTU)
––Replacement for the more common analog voltmeters and ammeters with
measuring point changeover, as well as measuring devices for power outputs and
power factor cos φ
––Standard rail mounting
Power monitoring device
SENTRON PAC3100
––Detection of up to 30 measured values
(energy consumption, base electrical quantities)
––Forwarding of data via RS485 (Modbus RTU), integrated S0 interface
––Transmission of current values and of switching states, e.g. of the SENTRON
3NJ62/3NJ4 connected to SENTRON PAC4200 via RS485 (Modbus RTU)
––Replacement for numerous individual analog measuring devices
––Digital inputs and outputs (2DI/2DO)
Power monitoring device
SENTRON PAC3200
––Detection of up to 50 measured values
(energy consumption, base electrical quantities)
––Forwarding of data via integrated Ethernet interface (Modbus TCP), communication module RS485 (Modbus RTU) or PROFIBUS DP, integrated S0 interface
––Transmission of current values and switching states,
e.g. of the connected SENTRON 3NJ62/3NJ4
––Digital input and output (1DI/1DO)
––Disconnection of loads via the integrated digital output if an adjustable limit
value or a limit value link is exceeded
Power monitoring device
SENTRON PAC4200
––Detection of up to 200 measured values
(energy consumption, base electrical quantities)
––Forwarding of data via integrated Ethernet interface (Modbus TCP), communication module RS485 (Modbus RTU) or PROFIBUS DP, integrated S0 interface
––Forwarding of measured switch data and switching states via Ethernet (Modbus TCP)
––Gateway function for the integration of pure Modbus RTU slaves or for the
connection of RS485 devices and connection to Ethernet architecture
––Digital inputs and outputs (2DI/2DO), can be expanded as an option
––Disconnection of loads via the integrated digital output if an adjustable limit
value or a limit value link is exceeded
––Real-time clock for storing reserve curves and events
Switching, Protecting and Measuring
Product
Description
Fuse switch disconnectors
SENTRON 3NJ4
––Detection of current values via integrated current transformer
––Forwarding of the current values and switching states, including to SENTRON PAC
––Load switching, isolation and measurement functions in one system
––Integrated LV HRC fuse for protection against overload and short circuit
––Exceptionally compact design for numerous connection options
––For the occasional manual switching and isolation of load feeders and load distributions in industry and non-residential buildings
Switch disconnectors
with fuse
SENTRON 3NJ62
––Detection of current values via integrated current transformer
––Forwarding of the current values and switching states, including to SENTRON PAC
––Load switching, isolation and measurement functions in one system
––Integrated switching device with double-break
––Suitable for numerous output cables for power distribution with minimum footprint
––Intelligent plug-in design for very easy, safe and convenient installation
Molded-case circuit
breakers
SENTRON 3VL
––Detection of current values via integrated current transformer
––Forwarding of data via Ethernet interface (Modbus TCP), RS485 (Modbus RTU) /
PROFIBUS DP, or SENTRON PAC / SIMOCODE pro
––Switching, protecting and measuring functions in one system
––Operating range 16 A to 1,600 A as incoming and outgoing circuit breakers in
switchgear and control cabinets
––Protects plants, motors and generators against short circuit and overload, for example
––Space-saving design
Air circuit breakers
SENTRON 3WL
––Measurement of over 200 values (energy consumption and base electrical quantities as well as switch and switching states).
––Forwarding of data via Ethernet interface (Modbus TCP), RS485 (Modbus RTU) /
PROFIBUS DP, or SENTRON PAC / SIMOCODE pro
––Disconnection of loads if an adjustable limit value is exceeded
––Switching, protecting and measuring functions in one system
––Three sizes for the power spectrum from 630 A to 6,300 A, with 3-pole or 4-pole
design, suitable for use up to 1,150 V
––The smallest circuit breaker of its class world-wide in the top performance range
Product
Description
LAN coupler with
software tool
––Storing and forwarding of power monitoring devices/e-counter measured data
––Connection of up to 30 devices to one LAN coupler
––Data communication between LAN coupler and PC via TCP/IP protocol
––Ongoing provision of the measured data (with time and date stamp) in the form
of csv files
––Flexible allocation of the individual measured values via matrix selection
Software for energy
management
SENTRON powermanager
––For applications in non-residential buildings or small- and medium-sized industries without SIMATIC automation, or in which a separation is required between
automation and power distribution
––Processing, archiving and visualizing of the measured values in the form of load
curves to identify potential savings or in clear reports on cost center allocation
––Monitoring of status or limits and generation of the corresponding
messages to support preventative maintenance activities and thus to increase
system availability
––Integration of devices with Modbus communication
––Data exchange between SENTRON powermanager and other business
systems via OPC and SQL queries
––Data export in cvs format for forwarding, e.g. in Excel
via SENTRON powermanager
Product
Description
GAMMA
Peak load limiter
––Shut down loads in terms of priority
––Distribute power load more evenly
––Avoids unnecessary costs caused by peak loads
––System connection via KNX
Visualizing
Actuating
More information and products at www.siemens.com/lowvoltage
15
Lighting, sun protection or room climate intelligent building automation enables savings.
More energy efficiency through
building management systems
Minimum energy consumption – maximum comfort and safety.
■■ Efficiency through automation
Considerable demands are placed on the
energy efficiency of buildings today. The
optimization of power supply, usage and
distribution can reduce costs and reduce
the strain on the climate. For example, in
office buildings around 28 percent of all
the electrical power is used for lighting.
Here and in many other sectors, intelligent automation systems for buildings
offer considerable potential for savings.
Based on the standard EN 15232, the
four efficiency classes from A to D illustrate the correlation between building
automation and energy efficiency.
■■ Comfort for the user
GAMMA building management systems is
the answer for efficient building management: Appropriate room automation
means maximum comfort for the user
while also saving energy. Lighting, sun
protection and room climate are optimally coordinated and can be adjusted to
meet every requirement. Despite automation, the user always has the option to
control his working environment individually as well.
Energy efficiency classes
according to standard EN 15232
Building
management
systems
Whether it's lighting, sun protection
or room climate building management systems help
to save energy.
16
A
B
C
D
Class A:
–– Highly energy-efficient
building automation systems and
technical building management
Class B:
–– High-grade building automation
systems and technical building
management
Class C:
–– Standard building automation
systems (reference basis)
Class D:
–– Non-energy-efficient
building automation systems
Professional planning of all building functions increases
comfort and reduces costs.
■■ Planning according to energy
efficiency class
The choice of technology depends primarily on the required energy efficiency
class. For a cost effective solution in class
C, digital time switches and dusk switches are used to control heating, ventilation
or air conditioning. If efficiency classes A
or B are required, communication-capable systems such as the GAMMA building
management systems are used. Their
consistent components control lighting,
sun protection and room climate, for example, and therefore help to save energy.
■■ Free planning tool
The online planning tool for the GAMMA
building management systems can be
used free of charge on the DIN.bauportal.
It supports experts in the tender process
for public clients with compliant standard
tender texts.
More information is available at:
www.din-bauportal.com/siemens
Highlights
■■ Room automation offers considerable potential savings
■■ GAMMA building management systems enable users to achieve energy
efficiency class A
■■ Consistent components provide
optimum control of lighting, sun
protection and room climate
Practical: the free planning tool for
the GAMMA building management
systems on the DIN.bauportal.
The world-wide
standard for
home and building
control
17
Buildings are effectively staged by GAMMA building
management systems.
Reduction of energy costs with
enhanced comfort
Building management implemented efficiently.
■■ The operating phase: selective
switching and regulating
Comfort and saving energy are no longer
a contradiction in terms these days.
Whether lighting, sun protection or room
climate, selective control by GAMMA
building management systems combines
numerous intelligent functions that allow
operators to reduce energy costs by up to
44 percent. For example, the automatic
control of lighting and shading ensures
the optimal utilization of available daylight. Users who integrate modern blinds
with daylight control into their systems
also profit from adjustment of the blind
slats to the position of the sun and avoid
operating errors such as switching on the
lights with the blinds closed.
18
■■ Regulation of lighting
optimally and deliberately
The intelligent control of lighting permits
savings and promotes long bulb life. For
example, a constant light level control
with daylight utilization allows only as
much artificial light as is necessary. If a
room is not being used, the light switches
off automatically. Control is effected by
means of presence detectors, connection to an access control system or using
a timer. In corridors the lighting can be
switched off outside the main usage
times and only switched back on when
the presence of persons is detected. During the main usage times, the light can
also be dimmed to a minimum brightness
level if there are no persons present. In
all sectors, the automatic control does
not impair the comfort of the user in any
way. Manual regulation and adjustment
for specific requirements are possible
where required.
■■ Regulation of the room temperature
depending on usage
Heating and air conditioning costs
represent a considerable proportion of
operating costs. GAMMA building management systems reduce these expenses
considerably by fully heating, air conditioning or ventilating rooms only when
they are actually being used. The room
temperature can be controlled via presence detectors, according to core usage
times, by room-related occupation plans
or manually. Additional functions permit
further savings. When windows are open,
for example, the heating is automatically
reduced to frost protection, and the air
conditioning and ventilation are reduced
or switched off. With the "Central off"
function, the heating, air conditioning
and ventilation can be dropped back to
protection mode at night.
Automatic shading control
according to the level of daylight.
Intelligent technology: Rooms are only lit or heated
when they are being used.
■■ Achieving a more efficient building
management
The central visualization function in
GAMMA building management systems
shows an updated graphic of all functions
in the building and permits central operation. Through connection to existing data
networks (LAN and Internet) or a building
control system, the building management
can even cover multiple buildings. Whether
within a building complex, within a town or
further afield, even distributed locations are
managed optimally and efficiently in terms
of energy on the basis of the current status
information.
Highlights
■■ Reducing energy costs by up to
44 percent with GAMMA building
management systems
■■ Constant light level control with
daylight utilization provides only the
amount of artificial light required
■■ Manual control and adjustment
according to individual requirements is possible at any time if
required
Lighting, sun protection or room climate, the automatic
control combines cost efficiency and comfort.
Lighting
Sun protection
Comfort
Reduce energy costs
at all times
Temperature
control
Operation,
display
The world-wide
standard for
home and building
control
19
Components for
building management systems
Selective switching, control and regulation as part
of an energy management architecture.
Lighting
20
Product
Description
GAMMA
Switch actuators
––Reliable switching of loads of all types up to 20 AX C load (such as lights)
––Detection of connected load current and indication when a load current limit
value is exceeded or undershot
GAMMA
Universal dimmers
––Dimming of incandescent lamps, HV halogen lamps and LV halogen lamps with
electronic transformer and conventional transformer
––Automatic detection and setting for the connected load type
GAMMA
switch/dimming actuators
––Switching and dimming of fluorescent lamps with dimmable electronic controlgear
––Control output for 1 ... 10 V interface
GAMMA
KNX/DALI gateway
––Switching and dimming of fluorescent lamps with DALI controlgear
––Control of the entire lighting system
––Integrated effect lighting control
––Support for emergency lighting
GAMMA light level control
––Switching and dimming of fluorescent lamps with dimmable electronic controlgear
––Integrated constant light level control - connected brightness sensors can be
used to create the optimal lighting
GAMMA
brightness controllers
––Brightness control of lights with integrated sensor technology
––Detection of the current brightness
––Control of the lights as required for optimal illumination and to ensure greater
efficiency
GAMMA
presence/motion detectors
––Motion detection in the detecting range - detects persons even
when sitting and working
GAMMA
time switches
––Switching of loads (lights) as required and using day/week/
year planners
GAMMA
dual sensors
––Measuring the outside temperature and brightness
––Control of the sun protection and lighting
Lighting
Product
Description
Digital and mechanical time
switches 7LF4, 7LF5
––Digital time-controlled switching of process sequences
––Digital and mechanical versions
––Simple operation
Time switches 7LF6, 5TT1 3
––Control of stairwell lighting
––Time-controlled switching of fans and fluorescent lamps
Dusk switches
7LQ2 1, 5TT3 3
––Demand-oriented switching of lighting systems for shop windows or walkways
Sun protection, anti-glare protection, daylight utilization
Product
Description
GAMMA
Anti-glare/sun protection
actuators
––Reliable control of sun protection systems
GAMMA
weather systems
––Recording of relevant weather data using the integrated sensor technology
––Ensures that rooms are less heated-up in the summer
––Supports heat discharge in winter to reduce heating costs
––Automatic blind slat tracking function in accordance with the changing position of the sun
Heating, air conditioning, ventilation
Product
Description
GAMMA
temperature sensors
––Detection of temperature
––Forwarding of basic values for optimal control
GAMMA
room temperature controllers
––Integrated control and temperature sensor
––Optimal control for heating, air conditioning and ventilation
GAMMA
actuators for HCVA
––Control of the drive units for heating, air conditioning and ventilation
GAMMA
valve actuators
––For the opening and closing of small valves
––Energy consumption only if the control variable is changed
GAMMA
door/window contacts
––Detection of the window position (open/closed) for energy-optimized
heating and air conditioning control, as a safety function and to monitor the
building shell
More information and products at www.siemens.com/lowvoltage
21
Example applications
Practical example of low-voltage power distribution
Efficient low-voltage power distribution as part of an energy management architecture
SENTRON
powermanager
Ethernet
Management
SENTRON
PAC3200
Production 1
Production 2
SENTRON
PAC3100
SENTRON
PAC3100
Production 3
SENTRON
3NJ62
River / waterway
SENTRON
PAC3200
SENTRON
PAC4200
RS485 (Modbus RTU)
SENTRON
3NJ62
SENTRON
3NJ62
SENTRON
3NJ62
■■ Requirement
■■ Solution
The production sector of an industrial plant covers a wide-ranging area. In the
past, the building foundations were affected by significant flooding. Therefore
the company requires a safe monitoring of the pumps used to control the
groundwater level. In addition, the power requirements for all buildings are
to be monitored and documented centrally. For this purpose, a standalone
system that is used independently of automation is planned. Due to the transparency of the energy flows and the resultant activities initiated, the company
anticipates savings of up to 20 percent on energy costs.
The power monitoring devices SENTRON PAC provide transparency in
the power supply. They forward switch disconnector current values and
switching states to the software for energy management SENTRON powermanager in the administration building to monitor the power supply and for
visualization of the energy consumption.
■■ Result
–The constant monitoring of status and limits and data forwarding to SENTRON
powermanager permits the immediate localization of faults and errors
–The "Expert" options package contains the SMS message via
SENTRON powermanager for errors such as a switch failure
–The transparency of the power flows indicates potential savings and permits
energy costs to be reduced by up to 20 percent
Practical example of building management systems
Minimum energy consumption, maximum comfort and safe operation
0%
20 %
Ethernet (LAN)
50 %
Pushbuttons
with IR receiver
decoder
Hand-held IR transmitter
Daylight
GAMMA presence
detector and
brightness sensor
GAMMA
IP-Controller
KNX
500 lx
GAMMA
switch/dimming
actuator
Artificial light
Lights with ECG 1 ... 10 V
GAMMA
dimmer
GAMMA
KNX/DALI
Gateway
Transformator
Bulbs
Lights with DALI EVG
■■ Requirement
■■ Solution
Automatic and daylight-dependent lighting control should save
up to 30 percent of energy costs in non-residential buildings. This is because
often the lighting in a room is switched on and later not switched off or
dimmed despite high sunlight levels through the window. Different sunlight
angles, temporary clouds or dawn/dusk periods require a different room lighting setting depending on the distance to the window.
GAMMA building management systems offer automatic constant lighting
control with brightness sensor and switching/dimming actuators based on
the international Standard KNX in combination with DALI lighting controls.
■■ Result
–Energy savings thanks to lighting control with intensive use of the level
of daylight
–Depending on the distance from the window, the artificial lighting is
controlled in separate groups
–Integration into a higher-level room and building management system,
such as DESIGO, is easily possible
More example applications at: www.siemens.com/ee-applications
22
Op
era
ti
Product Information/
Product &
System Selection
fig
ura
tion
ri
on
ng
Product Training
c
g/
nin
Plan
Product &
System Engineering
Product Hotline
e
rvic
/Se
on
Info
rm
at
Product Information
n
io
Or
de
Product Documentation
Everything from a single source – from initial information, planning, configuration and ordering through to commissioning, operation
and technical support.
Comprehensive support from A to Z
For more efficiency on all counts – comprehensive support and
quick and easy access to service-proven tools at any time via the Internet.
Product Information
Product Documentation
Website
Fast and selective information on the subject
of low-voltage power distribution:
www.siemens.com/lowvoltage
Newsletter
Keep up to date with our future-oriented products and systems:
www.siemens.com/lowvoltage/newsletter
Service & Support
Portal
Comprehensive technical information - from
planning to configuration through to operation:
www.siemens.com/lowvoltage/support
CAx Data
Compilation of the commercial and technical
master product data:
DVD Order No.: E86060-D1000-A207-A6-6300
(via Industry Mall)
www.siemens.com/lowvoltage/support
Image Database
Collection of product photos and graphics such
as dimensional drawings and internal circuit
diagrams:
www.siemens.com/lowvoltage/picturedb
Product Information/Product & System Selection
Information and
Download Center
Latest catalogs, customer magazines,
brochures, demo software and campaign
packages:
www.siemens.com/lowvoltage/infomaterial
Industry Mall
Comprehensive information and ordering
platform for the Siemens industry shopping
basket:
www.siemens.com/lowvoltage/mall
Product Training
SITRAIN Portal
Product & System Engineering
SIMARIS
Software Tools
Support with the planning and configuration
of electrical power distribution:
www.siemens.com/simaris
DIN.bauportal
The GAMMA Catalog, the GAMMA Planner and
the Gamma Installer Tool can be found here
quickly and conveniently:
www.din-bauportal.com/siemens
Comprehensive training program on our products, systems and engineering tools:
www.siemens.com/lowvoltage/training
Product Hotline
Technical Support
Support for all technical queries
concerning our products:
E-mail: support.automation@siemens.com
www.siemens.com/lowvoltage/technicalsupport
23
Answers for infrastructure.
■ Megatrends driving the future
The megatrends – demographic change,
urbanization, climate change, and glo­
balization – are shaping the world today.
These have an unprecedented impact
on our lives and on vital sectors of our
economy.
■ Innovative technologies to answer
the associated toughest questions
Throughout a 160­year history of pro­
ven research and engineering talent,
with more than 50,000 active patents,
Siemens has continuously provided its
customers with innovations in the areas
of healthcare, energy, industry, and
infrastructure – globally and locally.
■ Increase productivity and efficiency
through complete building life cycle
management
Building Technologies offers intelligent
integrated solutions for industry, com­
mercial and residential buildings, and
public infrastructure. Over the entire
facility’s life cycle, our comprehensive
and environmentally conscious port­
folio of products, systems, solutions,
and services for low­voltage power
distribution and electrical installation
technology, building automation,
fire safety and security ensures the:
– optimum comfort and highest energy
efficiency in buildings,
– safety and security for people,
processes, and assets,
– increased business productivity.
Siemens Switzerland Ltd
Industry Sector
Building Technologies Division
International Headquarters
Gubelstrasse 22
6301 Zug
Switzerland
Tel. +41 41 724 24 24
The information provided in this brochure contains merely general descriptions or characteristics of
performance which in actual case of use do not always apply as described or which may change as
a result of further development of the products. An obligation to provide the respective characteristics
shall only exist if expressly agreed in the terms of contract.
All product designations may be trademarks or product names of Siemens Ltd or supplier companies
whose use by third parties for their own purposes could violate the rights of the owners.
Subject to change without prior notice • Order No. E10003-E38-9B-E0070-7600
Dispo 25600 • 0910 5.0
© Siemens Switzerland Ltd 2010
www.siemens.com/lowvoltage/ee